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coin.go
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coin.go
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package types
import (
"encoding/binary"
"fmt"
"strconv"
)
// from 0 ~ 65535
// 0 ~ 255 : Qitmeer reserved
type CoinID uint16
const (
MEERA CoinID = 0
MEERB CoinID = 1
QitmeerReservedID CoinID = 255
)
func (c CoinID) Name() string {
if c == MEERA {
return "MEER Asset"
} else if c == MEERB {
return "MEER Balance"
} else if t, ok := CoinNameMap[c]; ok {
return t
} else {
return "Unknown-CoinID:" + strconv.FormatInt(int64(c), 10)
}
}
func (c CoinID) Bytes() []byte {
b := [2]byte{}
binary.LittleEndian.PutUint16(b[:], uint16(c))
return b[:]
}
// Is it the main coin ?
func (c CoinID) IsBase() bool {
return c == MEERA
}
func NewCoinID(name string) CoinID {
for _, coinid := range CoinIDList {
if name == coinid.Name() {
return coinid
}
}
// panic(fmt.Sprintf("Unknown-CoinID:%s", name)) // Which way is better ?
return MEERA
}
var CoinNameMap = map[CoinID]string{}
var CoinIDList = []CoinID{MEERA, MEERB}
// Check if a valid coinId, current only check if the coinId is known.
func CheckCoinID(id CoinID) error {
unknownCoin := true
for _, coinId := range CoinIDList {
if id == coinId {
unknownCoin = false
break
}
}
if unknownCoin {
return fmt.Errorf("unknown coin id %s", id.Name())
}
return nil
}
func IsKnownCoinID(id CoinID) bool {
return CheckCoinID(id) == nil
}
const (
// Greater than or equal to
FloorFeeType = 0
// Strict equality
EqualFeeType = 1
)
type FeeType byte